Slowness and general inability to reach many popular websites today is being caused
by a massive “distributed denial of service” (DDoS) attack on DYN, a large DNS provider.
Popular sites like Netflix, Reddit, Twitter and many others are involved. This is
outside of Cruzio's network, so we don't have an estimated time of resolution, but
you may read this article for more information - http://www.usatoday.com/story/tech/2016/10/21/cyber-attack-takes-down-east-coast-netflix-spotify-twitter/92507806/